Question

    There are different ways in which people try to deal with the problem of energy. One way is the greater production of common energy sources, such as coal, oil and gas. The trouble with these sources, however, is that they are not renewable.

Another way is energy conservation（节能）, which means using energy more efficiently（有效地）. In some very cold countries people build special houses to save energy. They place materials between the inside and the outside of the walls of the house to keep the cold out and the warmth in. The house is heated by the lights, the body heat of the people and the other equipment in it.

Finally, renewable energy sources are used even though they are often expensive to develop. One form of these is geothermal energy. In certain parts of the world, the temperature of the earth increases 30℃ with each kilometer down. At six kilometers, therefore, it rises to nearly two hundred degrees. To get the heat, water is pumped down into the rocks and back up to the surface. Heat from the earth is already used in certain countries.

1.From the passage we learn that oil______.

A.is quite easy to produce B.is not used most efficiently

C.is the most common energy source D.could be renewed only by new ways

2.Why are the “special houses” mentioned in the passage?

A.To keep the cold out and the warmth in.

B.To show the excellent skills of the builders.

C.To be an example of energy conservation.

D.To be heated by different sources of energy.

3.If the surface temperature is 15℃, how deep will you dig to get a temperature of 105℃?

A.One kilometer. B.Two kilometers.

C.Three kilometers. D.Four kilometers.

4.Where does the heat of the earth come from?

A.The rocks inside the earth. B.The water pumped into the earth.

C.The temperature of the earth. D.The water on the surface of the earth.

Answer

1.B

2.C

3.C

4.A

【解析】

本文介绍了人们节能的方法：一种方法是提高常见能源的产量，如煤炭、石油和天然气。另一种方法是节约能源，这意味着更有效地利用能源。最后，可再生能源被使用，尽管它们的开发成本往往很高。

1.推理判断题。根据“One way is the greater production of common energy sources, such as coal, oil and gas. The trouble with these sources, however, is that they are not renewable.”可知，石油没有得到最有效的利用，故选B。

2.推理判断题。根据“In some very cold countries people build special houses to save energy.”可知，这种特殊的房子是为了节能，故选C。

3.推理判断题。根据“In certain parts of the world, the temperature of the earth increases 30℃ with each kilometer down.”可知，地球的温度每下降一公里就上升30℃。如果表面温度是15℃，要达到105℃，105-15=90，90÷30=3，因此需要挖3千米才能达到这个温度，故选C。

4.细节理解题。根据“To get the heat, water is pumped down into the rocks and back up to the surface.”可知，地球的热量来自地球内部的岩石。故选A。